行方を

whereabouts

→ 行方
phrase Rare #39,359
whereabouts 行方 means “whereabouts,” and を marks it as the object of a verb, such as “know,” “search for,” or “discover.”
JA: 彼女の行方を知っていますか。
EN: Do you know her whereabouts?

彼の行方を知る者は誰もいない。

No one knows where he is.

警察は医師のベラ・ロイの行方を…何かおかしい

The police are looking for Dr. Bella Roy... Something isn't right.

— 嵐の中で (2018)